Search-light.



O. MOMB.

SEARCH LIGHT.

APPUBATION mm NOV. 22. ms.

1 273,084. Patented July 10, 1918.

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0. MOMB.

SEARCH LIGHT.

APPLICATION FILE D NOV. 22, I916. 1,273,084. Patented July 16, 1918.

2 SHE'5SSHEET 2.

1 I? i l a I I l fizz/022 607- OZe Jibmg a at night, and where a OLE MOMIB, OF WEST DULUTH, MINNESOTA.

SEARCH-LIGHT,

Specification of Letters Patent.

Patented July 16, 1918.

Application filed November 22, 1916. Serial No. 132,787.

To all whom it may concern:

Be it known that I, OLE Moms, a citizen of the United States, residing at West Duluth, in the county of St. Louis and State of Minnesota, have invented a certain new and useful Improvement in Search-Lights, of which the following is a specification.

My invention relates to improvements in search lights, particularly such as are used in docks and steam boat decks for loading and unloading purposes, or used forlighting any situation where work is taking place ermanent system of lighting units arranged throughout the entire area isnot feasible. One object of my invention is to provide a search light which will adequately illuminate the surface upon which it shines but which will be free from glare and which will not be of such dazzling brightnessas to make it diflicult for the operator to see when facing the li ht and when he has faced the light. Anot er object is to provide a new and improved form of re flector which will break up the ray so as to provide an evenly distributed cone or flood of light. Another object is to provide a new and improved form of housing and supporting and adjusting apparatus for controlling and containing the light, means being also provided for ventilating the interior of the housing so as to enable the use of high power high heat electric light bulbs. Another ob ject of my invention is to provide a reflector which will give a difl'used though effective illumination such as may be used on auto mobiles and the like for lighting the road without giving a dangerous, dazzling or blinding glare. Other objects will appear from time to time in the specification.

My invention is illustrated more or less diagrammatically in the accompanying drawings, wherein:-

Figure 1 is a vertical section along the axis of the device, showing. partsin elevation' Fig. 2 is a section along the line 2-2 of Fig. 1;

Fig. 3 is a section along the line 3-3 5 "Fig.1;..

Fig. 4 is a front elevation in detail of a part of therefiector.

- Like parts are indicated bylike characters in all the drawings. i

' A is a flat space or foot adapted to be screwed or otherwise attached to a founda-- tion not here shown. Rising upwardly from parts to ether upon the ball so as to pro vide a ree ball and socket connection between the supporting bar A and the ball A.

It will be noted that the clamping memhere are cut away as at A", so that the red A may pass up into the ball and socket joint, and thus movement in every direction is permitted. The thumb screws of course may be tightened up to clamp the parts together, so as to prevent relatlve movement, or they may be released slightl so as to permit a frictional control, an by completely withdrawing them the parts may be completed and assembled.

B is a conical housing It is attached at its front end or base to a ring B. This ring is mounted on the forwardend of the member A and is riveted or otherwise firmly attached to both the member and the housing. The conical housing is truncated just at its apex, and bent inward to form a flange B B is a hollow screw-threaded sleeve having a conical flange B adapted to engage the inner side of the housing B and the flange B This sleeve is screw-threaded into an enlarged ring B located at the upwardly turned end of the member At. The lamp is assembled by rotating the housing with the front ring until the flange B, together with the rear wall B of the apron B which overlies the upper portion. of the rear end of the housing, is clamped tight between the collar 13 and the ring 13, thus holding the parts firml in position. The ring is then riveted in pace at the front end of the frame A thus holding the arts in firm relation. 'It'will be noted t'at the apron B is open at the bottom, and covers the opening B in the upper wall of the housing. This opening 13 is surrounded by an upwardly extended flan e B. Thus an indirect opening is provide between the around the outside air through the apro the housing ing forwardly from the iron side of the! flange 13. Mounted upon it is a tube 0 which tube extends forwardly be 0nd the front boundary of the Opening This tube is flared as at C at its forward end, and carries soldered or otherwise attached thereto, the conical corrugated or scalloped reflector C The corrugations, it will be noted, commence in the surface of the re flectoronly at a' point removed from its point of attachment to the tube, so that immediately adjacent the point of attachment it forms a plane cone, but as it extends out therefrom the scallops or corrugations become more accentuated. C 1s a conical reflecting surface attached to the inner side of the housing. I have shown it here as separat material, but of course obviously it might be dispensed With and the housing itself polished on the inside to form the reflector. This reflecting surface extends inwardly beyond the scallofped cone reflector. C is the usual type 0 electric light bulb, provided with a base G, havin holding pins C adapted to engage in the holding slot C in the socket This socket C is screw-threaded into a cup (3 which cup is in turn screw-threaded on a hollow rod C. This rod is slidable within the sleeve B. C is a pin located within the sleeve B and adapted to be in frictional contact with the rod C. G is a collar screw-threaded on the sleeve B having an inclined conical. or cam surfaceC adapted to engage the inclined upper end of the pin C", so that when the nut is rotated, this pin will be clamped against the rod C" and hold it against longitudinal movement.

I) is a manipulating hand piece screwthreaded on the end of the rod C. D is a conductor wire passing in through the rod, to a terminal D into which it is clamped by the screw D. This terminal communicates with the lamp by means of a conducting member D, the return circuitcoming by way of the metallic parts of the lam..

E i +1. a door ring. It is supported on the ring 1% by meansof a hinge and adapted ti be locked in position with the door closczi by means of a pin E engaging the hinge member E. E is a door held in the ring ny means of aclam ing or locking member E. E are perfbrations in. the lower-part of the door ring adapted to permit the ingress [of air and thus assist in the,

ventilation of the lamp.

It will, lie, evident, that wh'le I have; shown in my "drawings an opera still many changes might be made both in size, shape and arrangement of arts, with out departing materially from tie spirit'of my invention. .1 wish, therefore, t

drawings be regarded as in a sense diagrammatte,

ive device,

at my therear extremity of the housing, a sleeve in Ihave shown in my drawin s arrows indicating the direction in w ich the air travels as it passes through and ventilates the system. It is obvious that under some circumstances the direction of movement of the air currents might be opposite without changin in any essential manner the operation 0 the device because in either event the air current will have to pass over the heated parts and cool them.

I claim: 1

1. A searchlight comprising a conical reflector, a source of light located therein between the apex and the base thereof, and a fixed auxiliary reflector located within the conical reflector between the source of light and its apex, said reflector ,being conical in shape, but havin its sides not as sharply inclined to the ma or axis as the sides of the conical reflector.

2. A Searchlight comprising a conical reflector, a source of light located therein between the apex and the base thereof, and a fixed auxiliary reflector so located within the conical reflector as to act in combination with it and leave it unobstructed between the source of light and its apex, said auxiliary reflector being in contact with the conical reflector about its periphery.

3. A Searchlight comprising a conical reflector, a source of lightlocated therein between the a ex and the base thereof, an auxiliary re ector located within the conical reflector between the source of light and its apex, said auxiliary reflector being rovided with radial corrugations exten ing outwardly from a point removed from the center of the auxiliary reflector.

4. A searchlight having a conical housing apertured on its upper side adjacent the apex thereof, a cylindrical apron open at the bottom of lesser diameter than the housing at its base, and inclosing the openin a plane Wall closing said apron in line wi the-rear extremity of the housing.

5. A searchlight having a conical housing apertured on its-upper side adjacent the apex thereof, a cylindrical apron open at the bottom of lesser diameter than the housing at its base, and inclosing thelopening, a plane wall closing said apron in line with the rear extremity of the housing, a sleeve in the end of the housin having a flange to engage'the inner wall 0 the housing at its end, the end of the housing being trancated to provide, a passage for the sleeve, the sleeve extending outwardly beyond the end of the housing.

ioo

6. A Searchlight having a conical housing apertured on its ugper side adjacent the apex thereof a cylin rical a ton open at the bottom of lesser diameter than the housing at its base, and inclosing the opening, a plane wall closing said apron in line with the end of the housing having a flange to engage the inner wall of the housing, at its end, the end of the housing being truncated to provide a passage for the sleeve, the sleeve extending outwardly beyond the end of the housing, the housing being provided with flanges about the o )ening therein extending upwardly toward the apron.

7. A searchlight comprising a conical reflector, a sleeve at the apex thereof, a tube carried by the sleeve and extending inwardly toward the front of the reflector, an auxiliary reflector carried by the tube, a source of light in front of the auxiliary re- Hector, and means located within the tube for supporting s'uch light source.

8. In a Searchlight the combination with a reflector and a source of light of a support thereof, said support comprising a sleeve, a rod slidable 1n the sleeve upon which the source of light is mounted, and means for holding the rod against move ment comprising a pin in the sleeve in frictional engagement with the rod, a nut screw threaded on the sleeve and having a cam surface adapted to engage the pin andthrust it against the rod.

9. A Searchlight comprising a conical housing, a frame member outside the housing parallel with the axis thereof anchored to the housing atone side of the base of the cone, an arm projecting upwardly from the frame member to the apex of the cone and attached to the cone, and meansfor support ing the frame.

10. A Searchlight comprising a conical housing, a frame member outside the housing parallel with the axis thereof anchored to the housing at one side of the base of the cone, an arm projecting upwardly from the frame member to the apex of the cone and attached to the cone, and means for supporting the frame, said means comprisinga ball and socket joint and means for controlling the frictional engagement of the surfaces to lock the parts in adjustable position.

11. A Searchlight having a housing, a reflector therein, an auxiliary reflector within the main reflector, an air vent in the wall of the housing behind the auxiliary reflector, air passages between the two reflectors, and an air passage in the front of the housing toward the bottom.

12. A searchlight comprising a conical reflector, a source of light located therein be tween the a ex and the base thereof, an. auxiliary re ector located within the conical reflector between the source of light and its apex, said auxiliary reflector being provided with a series of radial corrugations in creasing in depth outwardly toward the periphery thereof.

13. A Searchlight comprising a conical reflector, a source of light located therein be-' and an auxiliary reflector interposed on the a rear side of the light source between it and the main reflector, said auxiliary reflector being in contact with the main reflector and having its surface corrugated.

15. A search light comprising a reflector, a light source at the focal center thereof, and an auxiliary reflector interposed on the rear side of the light source between it and the main reflector, said auxiliary reflector being in contact with the main reflector and having its surface corrugated, said corrugations extending radially and located be tween the center of the auxiliary reflector and its periphery.

In'testi'mony whereof, I aflix my signature in the presence of two witnesses this OLE MOMB.

18 day of Nov., 1916.

Witnesses:

S. M. STRAIN, F. C. CARPENTER. 

